--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/libsst.c	Mon Aug 13 08:45:50 2007 +0200
@@ -0,0 +1,505 @@
+/* libsst.c - SPARC sound tools library
+**
+** Copyright (C) 1989 by Jef Poskanzer.
+**
+** Permission to use, copy, modify, and distribute this software and its
+** documentation for any purpose and without fee is hereby granted, provided
+** that the above copyright notice appear in all copies and that both that
+** copyright notice and this permission notice appear in supporting
+** documentation.  This software is provided "as is" without express or
+** implied warranty.
+
+** Hacked on by jwz for emacs.
+
+*/
+
+/* Synched up with: Not in FSF. */
+
+#ifdef emacs
+#include <config.h>
+#include "lisp.h"
+#else
+#if __STDC__ || defined(STDC_HEADERS)
+#include <stdlib.h>
+#include <unistd.h>
+#endif
+#include <stdio.h>
+#endif
+#include <fcntl.h>
+#include "libsst.h"
+
+#define AUDBUF 1024
+
+extern void usleep();
+
+int
+sst_open(play_level, record_level)
+    int play_level, record_level;
+    {
+    int fd, i, gr, ger, gx;
+    struct audio_ioctl ai;
+    char *getenv(), *ep;
+
+    fd = open( "/dev/audio", O_RDWR );
+    if ( fd < 0 )
+	{
+	perror( "sst_open: open /dev/audio" );
+	return( fd );
+	}
+
+#ifdef AUDIOSETQSIZE /* This no longer exists as of 4.1.2. */
+
+    /* Shrink audio device's queue size, to cut down time delay. */
+    i = AUDBUF;
+    if ( ioctl( fd, AUDIOSETQSIZE, &i ) < 0 )
+	{
+	perror( "sst_open: SETQSIZE" );
+	return( fd );
+	}
+#endif /* AUDIOSETQSIZE */
+
+    /* Set gains.  -10 <= ger <= 18,  -18 <= gr <= 12,  -18 <= gx <= 12. */
+    if (!play_level) 
+    {
+	play_level = 75;
+	if ( (ep = getenv( "SST_PLAY" )) != NULL )
+	{
+	    play_level = atoi( ep );
+	    if ( play_level < 0 || play_level > 99 )
+	    {
+		warn( "sst_open: SST_PLAY must be between 0 and 99" );
+		return( -1 );
+	    }
+	}
+    }
+    if (!record_level) 
+    {
+	record_level = 75;
+	if ( (ep = getenv( "SST_RECORD" )) != NULL )
+	{
+	    record_level = atoi( ep );
+	    if ( record_level < 0 || record_level > 99 )
+	    {
+		warn( "sst_open: SST_RECORD must be between 0 and 99" );
+		return( -1 );
+	    }
+	}
+    }
+
+    play_level = play_level * 59 / 100 - 28;
+    ger = play_level / 2;
+    gr = play_level - ger;
+    if ( ger < -10 )
+	{
+	ger = -10;
+	gr = play_level - ger;
+	}
+    if ( gr > 12 )
+	{
+	gr = 12;
+	ger = play_level - gr;
+	}
+    gx = record_level * 31 / 100 - 18;
+    sst_set_gr( fd, gr );
+    sst_set_ger( fd, ger );
+    sst_set_gx( fd, gx );
+
+    /*  Initialize the MMR2 register to send the output to either
+    **  the speaker or the earphone jack, depending on SST_EARPHONES.
+    */
+    ai.control = AUDIO_MAP_MMR2;
+    if ( ioctl( fd, AUDIOGETREG, &ai ) < 0 )
+	{
+	perror( "sst_open: GETREG MMR2" );
+	return( -1 );
+	}
+    if ( (ep = getenv( "SST_EARPHONES" )) != NULL )
+	ai.data[0] &= ~AUDIO_MMR2_BITS_LS;
+    else
+	ai.data[0] |= AUDIO_MMR2_BITS_LS;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_open: SETREG MMR2" );
+	return( fd );
+	}
+
+    return fd;
+    }
+
+void
+sst_close( fd )
+int fd;
+    {
+    struct audio_ioctl ai;
+
+    ai.control = AUDIO_MAP_MMR1;
+    ai.data[0] = 0;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_close: SETREG MMR1" );
+	}
+    ai.control = AUDIO_MAP_MMR2;
+    ai.data[0] = 0;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_close: SETREG MMR2" );
+	}
+    close( fd );
+    }
+
+/* These are tables of values to be loaded into various gain registers.
+*/
+
+static unsigned char ger_table[][2] = {
+    0xaa,	0xaa,	/* -10db */
+    0x79,	0xac,
+    0x41,	0x99,
+    0x9c,	0xde,
+    0x74,	0x9c,	/* -6db */
+    0x6a,	0xae,
+    0xab,	0xdf,
+    0x64,	0xab,
+    0x2a,	0xbd,
+    0x5c,	0xce,
+    0x00,	0x99,	/* 0db */
+    0x43,	0xdd,
+    0x52,	0xef,
+    0x55,	0x42,
+    0x31,	0xdd,
+    0x43,	0x1f,
+    0x40,	0xdd,	/* 6db */
+    0x44,	0x0f,
+    0x31,	0x1f,
+    0x10,	0xdd,
+    0x41,	0x0f,
+    0x60,	0x0b,
+    0x42,	0x10,	/* 12db */
+    0x11,	0x0f,
+    0x72,	0x00,
+    0x21,	0x10,
+    0x22,	0x00,
+    0x00,	0x0b,
+    0x00,	0x0f,	/* 18db */
+    };
+
+
+static unsigned char gr_gx_table[][2] = {
+    0x8b,	0x7c,	/* -18db */
+    0x8b,	0x35,
+    0x8b,	0x24,
+    0x91,	0x23,
+    0x91,	0x2a,
+    0x91,	0x3b,
+    0x91,	0xf9,	/* -12db */
+    0x91,	0xb6,
+    0x91,	0xa4,
+    0x92,	0x32,
+    0x92,	0xaa,
+    0x93,	0xb3,
+    0x9f,	0x91,	/* -6db */
+    0x9b,	0xf9,
+    0x9a,	0x4a,
+    0xa2,	0xa2,
+    0xaa,	0xa3,
+    0xbb,	0x52,
+    0x08,	0x08,	/* 0db */
+    0x3d,	0xac,
+    0x25,	0x33,
+    0x21,	0x22,
+    0x12,	0xa2,
+    0x11,	0x3b,
+    0x10,	0xf2,	/* 6db */
+    0x02,	0xca,
+    0x01,	0x5a,
+    0x01,	0x12,
+    0x00,	0x32,
+    0x00,	0x13,
+    0x00,	0x0e,	/* 12db */
+    };
+
+void
+sst_set_ger( fd, value )
+int fd, value;
+    {
+    struct audio_ioctl ai;
+
+    if ( ( value < -10 ) || ( value > 18 ) )
+	{
+	  char buf [255];
+	  sprintf (buf, "sst_set_ger: GER %d out of range", value);
+	  warn(buf);
+	  return;
+	}
+
+    /*  Add 10 to the value to get the index into the table.  */
+    ai.control = AUDIO_MAP_GER;
+    ai.data[0] = ger_table[value + 10][1];
+    ai.data[1] = ger_table[value + 10][0];
+
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_ger: SETREG GER" );
+	}
+
+    ai.control = AUDIO_MAP_MMR1;
+    if ( ioctl( fd, AUDIOGETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_ger: GETREG MMR1" );
+	}
+    ai.data[0] |= AUDIO_MMR1_BITS_LOAD_GER;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_ger: SETREG MMR1" );
+	}
+    }
+
+void
+sst_set_gr( fd, value )
+int fd, value;
+    {
+    struct audio_ioctl ai;
+
+    if ( ( value < -18 ) || ( value > 12 ) )
+	{
+	  char buf [255];
+	  sprintf (buf,  "sst_set_gr: GR %d out of range", value);
+	  warn (buf);
+	  return;
+	}
+
+    ai.control = AUDIO_MAP_GR;
+    ai.data[0] = gr_gx_table[value + 18][1];
+    ai.data[1] = gr_gx_table[value + 18][0];
+
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gr: SETREG GR" );
+	}
+
+    ai.control = AUDIO_MAP_MMR1;
+    if ( ioctl( fd, AUDIOGETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gr: GETREG MMR1" );
+	}
+    ai.data[0] |= AUDIO_MMR1_BITS_LOAD_GR;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gr: SETREG MMR1" );
+	}
+    }
+
+void
+sst_set_gx( fd, value )
+int fd, value;
+    {
+    struct audio_ioctl ai;
+    char buf [255];
+
+    if ( ( value < -18 ) || ( value > 12 ) )
+	{
+	  sprintf (buf, "sst_set_gx: GX %d out of range", value);
+	  warn (buf);
+	  return;
+	}
+
+    /*  We add 18 to get the index into the table, since entry 0 represents
+    *  -18db.
+    */
+    ai.control = AUDIO_MAP_GX;
+    ai.data[0] = gr_gx_table[value + 18][1];
+    ai.data[1] = gr_gx_table[value + 18][0];
+
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gx: SETREG GX" );
+	}
+
+    ai.control = AUDIO_MAP_MMR1;
+    if ( ioctl( fd, AUDIOGETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gx: GETREG MMR1" );
+	}
+    ai.data[0] |= AUDIO_MMR1_BITS_LOAD_GX;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_set_gx: SETREG MMR1" );
+	}
+    }
+
+void
+sst_tones( fd, dhz1, dhz2, thz, rhz, usec )
+int fd, dhz1, dhz2, thz, rhz, usec;
+    {
+    char buf [255];
+    struct audio_ioctl ai;
+    int dval1, dval2, tval, rval;
+    unsigned char oldmmr2, newmmr2;
+
+    if ( dhz1 == 0 )
+	dval1 = 0;
+    else
+	{
+	dval1 = ( dhz1 * 128 + 63 ) / 1000;
+	if ( ( dval1 < 1 ) || ( dval1 > 255 ) )
+	    {
+	      sprintf(buf, "sst_tones: dhz1 %d out of range", dhz1 );
+	      warn (buf);
+	      return;
+	    }
+	}
+
+    if ( dhz2 == 0 )
+	dval2 = 0;
+    else
+	{
+	dval2 = ( dhz2 * 128 + 63 ) / 1000;
+	if ( ( dval2 < 1 ) || ( dval2 > 255 ) )
+	    {
+	      sprintf(buf, "sst_tones: dhz2 %d out of range", dhz2 );
+	      warn (buf);
+	      return;
+	    }
+	}
+
+    if ( thz == 0 )
+	tval = 0;
+    else
+	{
+	tval = ( thz * 128 + 63 ) / 2000;
+	if ( ( tval < 1 ) || ( tval > 255 ) )
+	    {
+	      sprintf(buf, "sst_tones: thz %d out of range", thz );
+	      warn (buf);
+	      return;
+	    }
+	}
+
+    if ( rhz == 0 )
+	rval = 0;
+    else
+	{
+	rval = ( rhz * 128 + 63 ) / 2000;
+	if ( ( rval < 1 ) || ( rval > 255 ) )
+	    {
+	      sprintf(buf, "sst_tones: rhz %d out of range", dhz2 );
+	      warn (buf);
+	      return;
+	    }
+	}
+
+    if ( ( dval1 != 0 || dval2 != 0 ) && ( tval != 0 || rval != 0 ) )
+	{
+	  sprintf(buf, "sst_tones: cannot use DTMF and TONE or RINGER at the same time", dhz2 );
+	  warn (buf);
+	  return;
+	}
+
+    if ( tval != 0 && rval != 0 )
+	{
+	  sprintf(buf, "sst_tones: cannot use TONE and RINGER at the same time", dhz2 );
+	  warn (buf);
+	return;
+	}
+
+    ai.control = AUDIO_MAP_MMR2;
+    if ( ioctl( fd, AUDIOGETREG, &ai ) < 0 )
+	{
+	perror( "sst_tones: GETREG MMR2" );
+	}
+    oldmmr2 = newmmr2 = ai.data[0];
+
+    if ( dval1 != 0 || dval2 != 0 )
+	{
+	newmmr2 |= AUDIO_MMR2_BITS_DTMF;
+	ai.control = AUDIO_MAP_FTGR;
+	ai.data[0] = dval1;
+	ai.data[1] = dval2;
+	if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	    {
+	    perror( "sst_tones: SETREG FTGR" );
+	    }
+	}
+
+    if ( tval != 0 )
+	{
+	newmmr2 |= AUDIO_MMR2_BITS_TONE;
+	ai.control = AUDIO_MAP_FTGR;
+	ai.data[0] = tval;
+	ai.data[1] = 0;
+	if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	    {
+	    perror( "sst_tones: SETREG FTGR" );
+	    }
+	}
+
+    if ( rval != 0 )
+	{
+	newmmr2 |= AUDIO_MMR2_BITS_RINGER;
+	ai.control = AUDIO_MAP_FTGR;
+	ai.data[0] = rval;
+	ai.data[1] = 0;
+	if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	    {
+	    perror( "sst_tones: SETREG FTGR" );
+	    }
+	}
+
+    ai.control = AUDIO_MAP_MMR2;
+    ai.data[0] = newmmr2;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_tones: SETREG MMR2" );
+	}
+
+    usleep( usec );
+
+    ai.data[0] = oldmmr2;
+    if ( ioctl( fd, AUDIOSETREG, &ai ) < 0 )
+	{
+	perror( "sst_tones: SETREG MMR2" );
+	}
+    }
+
+void
+sst_dtmf( fd, dial, usecper, usecpause )
+int fd, usecper, usecpause;
+char *dial;
+    {
+    char *cp;
+
+    for ( cp = dial; *cp != '\0'; cp++ )
+	{
+	switch ( *cp )
+	    {
+	    case '1': sst_tones( fd, 703, 1211, 0, 0, usecper ); break;
+	    case '2': sst_tones( fd, 703, 1336, 0, 0, usecper ); break;
+	    case '3': sst_tones( fd, 703, 1492, 0, 0, usecper ); break;
+	    case 'A': sst_tones( fd, 703, 1648, 0, 0, usecper ); break;
+	    case '4': sst_tones( fd, 773, 1211, 0, 0, usecper ); break;
+	    case '5': sst_tones( fd, 773, 1336, 0, 0, usecper ); break;
+	    case '6': sst_tones( fd, 773, 1492, 0, 0, usecper ); break;
+	    case 'B': sst_tones( fd, 773, 1648, 0, 0, usecper ); break;
+	    case '7': sst_tones( fd, 859, 1211, 0, 0, usecper ); break;
+	    case '8': sst_tones( fd, 859, 1336, 0, 0, usecper ); break;
+	    case '9': sst_tones( fd, 859, 1492, 0, 0, usecper ); break;
+	    case 'C': sst_tones( fd, 859, 1648, 0, 0, usecper ); break;
+	    case '*': sst_tones( fd, 945, 1211, 0, 0, usecper ); break;
+	    case '0': sst_tones( fd, 945, 1336, 0, 0, usecper ); break;
+	    case '#': sst_tones( fd, 945, 1492, 0, 0, usecper ); break;
+	    case 'D': sst_tones( fd, 945, 1648, 0, 0, usecper ); break;
+
+	    case ' ': case '-': case '(': case ')': case '+':
+	    continue;	/* ignore */
+
+	    case ',': usleep( usecper ); break;	/* big pause */
+
+	    default:
+	      {
+		char buf [255];
+		sprintf( buf, "sst_dtmf: unknown dialing code '%c'", *cp );
+		warn (buf);
+	      }
+	    }
+	usleep( usecpause );
+	}
+    }